308 TAPIROIDA. 
by the entire and consolidated fang. The flattened surface, 
(fig. 105, B,) is gently undulating, convex in the middle and 
concave at each side near the ridges in the transverse di- 
rection: the crown is defended by two layers of enamel : 
the outer and thicker layer has a minutely wrinkled sur- 
face and terminates near the base of the crown by a 
finely plicated border (8, a); extending lower upon the 
posterior and outer than upon the anterior and inner sides 
of the crown. The thin and smooth layer of the enamel 
extends to and defines the base of the crown (8, 6); the 
outer layer being coextensive with the inner one only at 
the two boundary ridges, and the inner layer being ex- 
tended further upon the tooth at its anterior and imner 
sides. The length of this tooth must have been three 
inches when entire; the circumference of the base of the 
crown is two inches, nine lines. From its close resem- 
blance in the essential characters of its form to the canines 
of the great extinct Tapiroid Pachyderms, and the appa- 
rent specific distinctions from any of the known species 
of Lophiodon, I strongly suspect it to have belonged to a 
Coryphodon : its proportions agree with those of the molar 
teeth of the Coryphodon eocenus, and the enamel has the 
same delicate wrinkled surface; and, although in the 
question of the specific identity of two fossils from differ- 
ent localities, identity of geological formation would, of | 
itself, be of small moment, it adds to the probability 
arising from the arguments derived from organic agree- 
ment. 
